Anatase/rutile dual layer deposition due to hydrolysis of titanium oxysulfate with hydrogen peroxide solution at low temperature

Fan Xiao, Kanji Tsuru, Satoshi Hayakawa, Akiyoshi Osaka

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

Anatase/rutile dual layers were deposited on titanium and polyethylene substrates when they were soaked in TiOSO4/H2O2 solution and aged in hot water: The dense bottom layer predominantly consisted of rutile, while the upper layer consisted of loosely packed aggregation of anatase particles. The titania deposition was the results of compromise among three conflicting processes: (1) hydrolysis of TiOSO4 to yield either soluble titania-H2O2 complexes or titania, (2) dissolution of the titania layer under the presence of H2O 2, and (3) corrosive reactions between titanium substrates and H 2O2 to yield similar complexes or compounds. The dissolution-deposition equilibrium was found associated with pH of the sulfate solution and changed with soaking time. Thus, proper pH value and soaking time in the treating solution were the two key factors to control the formation of dense titania layers. The resulted titania layers were easily covered with fine apatite particles when soaked in a solution supersaturated with its component ions.

本文言語英語
ページ(範囲)6339-6346
ページ数8
ジャーナルJournal of Materials Science
42
15
DOI
出版ステータス出版済み - 8 2007

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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